專業(yè)英語(yǔ)中的常見(jiàn)語(yǔ)法現(xiàn)象分析-資料下載頁(yè)
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【正文】 new polymers with markedly higher temperature resistance than those previously available.The catalysts usually must be prepared at the low temperatures since most of them beeheterogeneous when prepared at or warmed up to the temperatures above about 40 .☆ 單數(shù)名詞前一般要加冠詞：a , the等； 但以下情況可不加：表示不特指的、較抽象的概念：This chapter will consider the characteristics of step polymerization in detail.An understanding of the relative ease of cyclization or linear polymerization es from a variety of sources.Different polymers are synthesized to yield various mechanical behaviors by the appropriate binations of crystallinity, crosslinking, Tg, and Tm.但需注意這些單詞前加冠詞也是經(jīng)常見(jiàn)到的，這是由它在句中的含義決定的如有一定的特指意義：Polyisoprene is a typical elastomer – it is amorphous, easily crossed, has a low Tg (73176。C) and a high Tm (14176。C).☆ 目錄、標(biāo)題中通常省略冠詞：1. Introduction11 Types of Polymers and Polymerizations…14 Molecular Weight15 Physical State☆圖、表的題目中有時(shí)可省略冠詞：Fig. 22 Second order plot of the selfcatalyzed polyesterification of adipic acid with diethylene glycol at 166 176。C.Fig. 8 Dependence of the ease of cyclization on the size of the ring.☆ 具體的化學(xué)藥品、化學(xué)物質(zhì)前通常不加冠詞：The polymerization is catalyzed by protonic or lewis acids although a wide variety of base catalysts such as calcium acetate and antimony trioxide can also be used.ConcentrationMolecular Weight☆ 圖中的橫、縱坐標(biāo)的名稱前不加冠詞：四 標(biāo)點(diǎn)英文中一句話結(jié)束要用句號(hào)注意避免過(guò)長(zhǎng)的句子這點(diǎn)與漢語(yǔ)中常用逗號(hào)的習(xí)慣不同請(qǐng)注意以下結(jié)構(gòu)的標(biāo)點(diǎn)…… such as A and B ………… such as A, B and C ………… , such as A, ………… , for example, ………… , for example ………… ,., ………… ,., …………, respectively.五 大小寫☆ 請(qǐng)注意以下結(jié)構(gòu)的大、小寫：當(dāng)提及具體第幾章、節(jié)；圖、表；方程式時(shí)，首個(gè)字母通常要大寫：As discussed in Chapter 2, ……In Section , we ……As shown in Figure 1, ……The results are listed in Table 3.當(dāng)不指明是第幾章、節(jié)；圖、表；方程式時(shí)，首個(gè)字母如在句中通常用小寫：In the previous chapter, ……As shown in this figure, ……六 縮寫：以下全名和縮寫在文中通常視為同等，可以互換。Figure Fig. Figures Figs.Table Tab.Chapter Chap.Section Sec.Equation Eq. Equations Eqs.7 /
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